How To Fix CNVMBTRFC128 - Modify destination failed (see table cnvmbtdest)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBTRFC - Messages used in RFC Management and its objects

• Message number: 128

• Message text: Modify destination failed (see table cnvmbtdest)

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBTRFC128 - Modify destination failed (see table cnvmbtdest) ?

  The SAP error message CNVMBTRFC128: Modify destination failed (see table cnvmbtdest) typically occurs in the context of SAP system migrations or data transfers, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that there was a failure in modifying a destination entry in the cnvmbtdest table, which is used to manage destination configurations for data transfer.
  Causes:
  
  Incorrect Configuration: The destination configuration in the cnvmbtdest table may be incorrect or incomplete.
  Authorization Issues: The user executing the operation may not have the necessary authorizations to modify the destination.
  Database Locking: There may be a lock on the cnvmbtdest table or related tables, preventing modifications.
  Data Integrity Issues: There may be inconsistencies or integrity issues in the data being processed.
  Technical Errors: There could be underlying technical issues, such as network problems or issues with the RFC connection.
  
  Solutions:
  
  Check Configuration: Review the entries in the cnvmbtdest table to ensure that all required fields are correctly populated. Make sure that the destination settings are valid.
  User Authorizations: Verify that the user has the necessary authorizations to modify the destination. You may need to consult with your SAP security team.
  Release Locks: Check for any locks on the cnvmbtdest table. You can use transaction codes like SM12 to view and release locks if necessary.
  Review Logs: Check the application logs (transaction SLG1) for more detailed error messages that may provide additional context about the failure.
  Test RFC Connection: Ensure that the RFC connection to the destination is working correctly. You can test this using transaction SM59.
  Data Consistency: Ensure that the data being processed is consistent and does not violate any constraints defined in the database.
  Consult Documentation: Refer to SAP Notes or documentation related to the specific migration or data transfer process you are using for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM59 (RFC Destinations), SLG1 (Application Log), and SE11 (Data Dictionary) to investigate the issue further.
  SAP Community: Consider reaching out to the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.